MYCETOZOA OF ANTIGUA AND DOMINICA. 121 



variation that occurs in the spinose character of the capillitium, 

 and also as showing the close connection that exists between the 

 two genera Trichia and Heiidlrichia. In one specimen the capil- 

 litium is strongly spinose, in another good development the threads 

 are almost smooth, and although the Hemitriclda structure prevails, 

 there are many free elaters of various lengths, some of them very 

 short ; in this respect it corresponds with a specimen of H. Seiyida 

 from New Zealand, referred to in the introduction to the Brit. Mus. 

 Cat. Mycetozoa, p. 16. 



45. Hemiteichia rubiformis List. On bark, Antigua. A typical 

 specimen. 



46. Arcyria ALBiDA Pers. On dead wood, Antigua. This variable 

 species is well represented in Mr. Gran's gatherings. Some of the 

 sporangia are ovoid, some cylindrical, and either solitary or in 

 clusters of three or four on a combined stalk ; the colour varies 

 from grey to buff and orange-yellow. The last might rank as var. 

 jjomiformis, but the sporangia are shortly cylindrical. The capillitium 

 is more or less spinose in different gatherings, but it is of precisely the 

 same character in some of both the grey and orange-yellow sporangia. 



47. Arcyria punicea Pers. This species is represented by five 

 gatherings from Antigua, and one from Dominica. In the Dominica 

 specimen and in two of those from Antigua the capillitium is of the 

 usual English type ; in the others the threads are extremely slender, 

 beset with sharp and rather distant spines — a form that has been 

 collected before in hot climates. 



48. Arcyria incarnata Pers. On dead wood, Antigua. An 

 interesting slender form of the species ; the capillitium is unattached 

 to the smooth, delicately membranous cup, and has numerous clavate 

 free ends. 



49. Arcyria insignis Cke. & Kalchb. On dead wood, Antigua. 

 Mr. Cran has sent five gatherings of this minute form. The 

 sporangia are in small scattered clusters, pale rosy red, and in- 

 conspicuous from the slender capillitium spreading widely. Until 

 recently the two specimens from the Cape in the Kew Herbarium 

 were the only known examples of the species. In December, 1896, 

 I received from Dr. Nyman, of Upsala, a fine specimen of a larger 

 form than those referred to ; the unexpanded sporangia are cylindric, 

 measuring 1-1-3 mm. in total height, of which the stalks are 0*3- 

 0-5 mm. ; it was obtained at St. Angelo, Brazil, by G. Malme, in 

 January, 1893 ; though differing in the size of the sporangia, the 

 character of the capillitium is precisely the same as in the Cape and 

 Antigua gatherings. Among the Java specimens collected by Prof. 

 Penzig there is one of A. ijisignis of the same form as the type in 

 the Kew Herbarium ; it consists of six clusters of sporangia with 

 expanded capillitium, on dead wood. With the exception of the 

 Brazil specimen, none of the recorded examples retain their original 

 form. It is satisfactory that the integrity of the species is now well 

 established. 



50. PERiCH^NACHRYSosPERMAList. On dead wood, Antigua. The 

 five specimens of this species present the variation in the length of 



